Motor vehicle



E. C. HORTON MOTOR vEHcLE Feb. 7, 1939.

Filed March 1l, 1935 INVENTOR g ErwmCMoronf,

BY @uw @uw ATTRNx-:Ys

Patented Feb.` 7, 1939 UNITED vSTATES -Y MOTOR VEHICLE Erwin G. Horton. Hamburg, N. Y., assigner to Trico Products Corporation, Buffalo. N. Y.

Application Much 11, less, sei-isi No. 10,524

4 Claims.

This invention relates to a motor vehicle and has particular reference to the provision ot a source oi pressure for the operation of iluid pressure operated accessories for motor vehicles.

ject to provide a source ci' pressure for the operation oi' accessories wherein the pressure producing unit is operated by the circulating liquid in the force-feed lubricating system of the motor 1n vehicle power plant.

It has heretofore been proposed to utilize the lubricant pressure for the operation of a small motor but the apparatus heretoioreemployed has been impractical and ineiiicient for various reasons among which is the failure oi the lubricant to function properly as a source of power. 'I'his has been caused. to some extent. by the lubricant failing to maintain a substantially constant duidity. For instance, when the engine is cold and the lubricant somewhat congealed the movement oi' the same through extraneous passages is sluggish and even when the main body of the lubricant has become heated its movement is retarded as it passes through such passages and consequently its emciency as a driving force is impaired.

The present invention aims to incorporate a motor unit in the power plant as a part thereof and in a manner to obtain the greatest emciency from the lubricating system as a source of power.

The invention further has for its object to provide an improved motor pump unit which will be durable in construction and practical in operation as a reliable and satisfactory source of uid pressure for the operation of pressure actuated accessories. l

In the drawing, Fig. 1 is a phantomview cfa motor vehicle equipped with system i embodyingjthe present invention; 1 y A Fig.V 2 isa longitudinal, .sectional view through a' motor. pump unit embodying. one` formof the invention; 'y j i .l

Ilig.` 3- is a -rragmentary cross secvztionalV view i l labout cna line t-S of Fig. 2;,- and Y Figs. 4- and 5 aresectionalviewsfthrough the 451 yrespective pump valves of the unit as-viewed on lineslf-l and B-B o fFlg. 3;

-Reierringmore particularly to the drawing, j thenumeral" i' designates. thewall ot the engine crank-case which latter servesasla reservoir for 50 vthe lubricating system.,l and 2 a branch conduit i from the oil pump 2i at the outlet or delivery side thereof, so that thelubricant passing through the 'conduit 2 will beheated by the warm temperature within the crank case thereby teV maintain the/ n acidity u: .me lubricant substantially coman:

The present invention has for its primary oband enable it to exert its i'ull force and pressure when delivered into motor chamber I of the unit. The duid motor of the unit comprises a casing I having the chamber l in which the piston 5 reciprocates, the conduit -2 delivering the liquid in- 5 to the piston chamber through an inlet opening t. The particular motor herein shown, for the purpose of illustration, has the piston provided with an annular passage 'l which communicates through longitudinal passages or ports l to the 1o chamber 4 at the, opposite sides of the piston, a valve 9 being interposed between spaced seats l for alternate engagement therewith whereby the iiow of the liquid lubricant will be rst to one side of the piston and then to the opposite side 1s thereof. An outlet passage or port I0 is provided in the piston to establish communication between the chamber I at opposite sides of the piston and the outlet passage il which latter leads through a piston rod i2 out into the crank case chamber. go Valves i3 alternately seat over the opposite ends of the conduit III Vwhereby exhaust communication with the chamber l will be established at one side only ci the piston and this opposite to the inflow. 25 A spacer member il spaces the outlet valves i8 to insure such alternate seating of the same as they are alternately pushed to their seats by the collars lil and i1 which are respectively slidable on the oppositely extending piston rods I2 and 30 i8. These piston rods are slidable through bearings i9 and 2l in the end walls of the chamber I. The plates IQ and i1 are backed by springs 2l which are slidable on the rods for1 being compressed during reclprocation of theA piston after 35 -theyengage the adjacent end walls of the cham'- ber. When predeterminedly compressed such spring will act to shift the respective one of,

plates I8 and .I'I. These plates are provided with lingers 22 and 23 which extend inwardly through 4o the inlet ports 8 and against thevalve 9.

Consequently, as the fluid pressure enters to the lett, in Fig. 2, Vthe piston will be forced to the right, and thelliquid ahead of they piston will be forced from thev chamber l out through the tubular pisnambertmimove tnepaton tunisien. 'rms .j

causes the liquid in advance of the piston at the left side thereof to be forced out through the outlet port IU and back into the crank case.

The piston rod I8 extends through the end wall of the chamber 4 into a pump chamber 25 to support the plunger 26 of a double acting air pump. 'I'he end wall 24 may be common to both chambers and serve to support the entire unit on the wall I of the crank case. 'I'he pump is preferably double acting and therefore the inlet passage 21 will open into the opposite ends of the pump chamber through valved ports 28 and 28. The valved outlet ports 30 and 3| will merge into a discharge passage 32. Where the pump is of the suction type and is to supplement or replace the intake manifold suction of the internal combustion power plant as a source of suction, the outlet passage 32 will be connected to the intake manifold by the conduit 33 or it may discharge directly.- into the atmosphere. The inlet passage 21 will be connected by conduit 34 to the pressure or suction operated accessory 35.

The installation of the motor pump unit is such that the heat from the engine may readily be transmitted to the motor unit so as to insure a uniform fluidity of the lubricant for the greatest efficiency in the operation of the motor. According to the present disclosure, the motor part of the unit is disposed within the crank case, the same extending from the head wall 24 through an opening 36 in the crank case Wall and may be submerged more or less wholly within the oil bath or content therein. This arrangement secures the greatest efficiency from the unit since the oil flow is uniform at practically all times of engine operation and therefore its transmission of power from the oil system pump to the motor is reliable for the production of an adequate supply of air under pressure by the air pump 25.

What is claimed is:

1. A motor vehicle having a power plant of the internal combustion type and provided with a crank case and a force feed lubricating system including an oil pump, the crank case adapted for containing a supply of lubricating oil and provided in its side wall with an opening, a fluid pressure actuated accessory system including an air pump for supplying the accessory with operating pressure, and a motor for operating the air pump and having an inlet connected to the oil pump outlet with valve mechanism for operatively directing the pumped oil to actuate the motor, said air pump and motor being mountable on the crank case as a unit with the motor exposed through the crank case opening to the interior thereof.

2. A motor vehicle having a power plant of the internal combustion type and provided with a crank case and a force feed lubricating system including an oil pump, the crank case adapted for containing a supply of lubricating oil and provided in its side wall with an opening, a fluid pressure actuated accessory system including an air pump for supplying the accessory with operating pressure, and a motor for operating the air pump and having an inlet connected to the oil pump outlet with valve mechanism for operatively directing the pumped oil to actuate the motor, said motor being carried by the air pump for mounting and demounting on the crank case over the opening thereof with the motor extending from the air pump into the crank case.

3. A motor vehicle having a power plant of the internal combustion type and provided with a crank case and a torce feed lubricating system including an oil pump, the crank case adapted for containing a supply of lubricating oil and provided in its side wall with an opening, a fluid pressure actuated accessory system including an air pump for supplying the accessory with operating pressure, and a motor for operating the air pump operatively connected thereto and having an inlet connected to the oil pump outlet with valve mechanism for operatively directing the pumped oil to actuate the motor, said motor being mounted on the crank case over the opening thereof and extending into the crank case.

4. A motor vehicle having an internal combustion power plant with a force feed liquid circulating system including a liquid circulating pump, a fluid pressure actuated accessory system including an air actuated accessory and an air pump connected by an air passage to the accessory for providing the necessary air pressure differential to operate the accessory, and a motor for driving the air pump connected positively therewith, said motor having an inlet and an outlet connected in the liquid circulating system and comprising a chamber adapted to be filled with the circulating liquid for moving the liquid actuated member of the motor to drive the air pump and also to expel the spent liquid from the opposite side of said member whereby the liquid is uniform in its circulatory flow through the motor, said accessory having a part movable by the air pressure differential, and the air column between the air pump and the accessory acting to modify theyaction of the incompressible liquid on the accessory.

ERWIN C. HORTON. 

